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Finding the Third Proportional to 4,872 and 7,983

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Solution

The third proportional to 4,872 and 7,983 is: 13,080.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,872 : 7,983 = 7,983 : x
  2. Step 2: Convert to fraction form
    4,872/7,983 = 7,983/x
  3. Step 3: Cross multiply
    4,872x = 7,983 × 7,983
  4. Step 4: Simplify right side
    4,872x = 63,728,289
  5. Step 5: Solve for x
    x = 63,728,289/4,872
  6. Step 6: Final answer
    x = 13,080.52

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.